content: /**
   * Copyright (c) 2012-2017, Andy Janata
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without modification, are permitted
   * provided that the following conditions are met:
   *
   * * Redistributions of source code must retain the above copyright notice, this list of conditions
   *   and the following disclaimer.
   * * Redistributions in binary form must reproduce the above copyright notice, this list of
   *   conditions and the following disclaimer in the documentation and/or other materials provided
   *   with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
   * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
   * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
   * WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  package net.socialgamer.cah.handlers;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Set;
  
  import javax.servlet.http.HttpSession;
  
  import net.socialgamer.cah.CahModule.BanList;
  import net.socialgamer.cah.Constants.AjaxOperation;
  import net.socialgamer.cah.Constants.AjaxRequest;
  import net.socialgamer.cah.Constants.DisconnectReason;
  import net.socialgamer.cah.Constants.ErrorCode;
  import net.socialgamer.cah.Constants.LongPollEvent;
  import net.socialgamer.cah.Constants.LongPollResponse;
  import net.socialgamer.cah.Constants.ReturnableData;
  import net.socialgamer.cah.Constants.SessionAttribute;
  import net.socialgamer.cah.RequestWrapper;
  import net.socialgamer.cah.data.ConnectedUsers;
  import net.socialgamer.cah.data.QueuedMessage;
  import net.socialgamer.cah.data.QueuedMessage.MessageType;
  import net.socialgamer.cah.data.User;
  
  import org.apache.log4j.Logger;
  
  import com.google.inject.Inject;
  
  
  public class BanHandler extends Handler {
    protected final Logger logger = Logger.getLogger(BanHandler.class);
  
    public static final String OP = AjaxOperation.BAN.toString();
  
    private final ConnectedUsers connectedUsers;
    private final Set<String> banList;
  
    @Inject
    public BanHandler(final ConnectedUsers connectedUsers, @BanList final Set<String> banList) {
      this.connectedUsers = connectedUsers;
      this.banList = banList;
    }
  
    @Override
    public Map<ReturnableData, Object> handle(final RequestWrapper request, final HttpSession session) {
      final User user = (User) session.getAttribute(SessionAttribute.USER);
      assert (user != null);
  
      if (!user.isAdmin()) {
        return error(ErrorCode.NOT_ADMIN);
      }
  
      if (null == request.getParameter(AjaxRequest.NICKNAME)
          || request.getParameter(AjaxRequest.NICKNAME).isEmpty()) {
        return error(ErrorCode.NO_NICK_SPECIFIED);
      }
  
      final String banIp;
      final User kickUser = connectedUsers.getUser(request.getParameter(AjaxRequest.NICKNAME));
      if (null != kickUser) {
        banIp = kickUser.getHostname();
  
        final Map<ReturnableData, Object> kickData = new HashMap<ReturnableData, Object>();
        kickData.put(LongPollResponse.EVENT, LongPollEvent.BANNED.toString());
        final QueuedMessage qm = new QueuedMessage(MessageType.KICKED, kickData);
        kickUser.enqueueMessage(qm);
  
        connectedUsers.removeUser(kickUser, DisconnectReason.BANNED);
        logger.info(String.format("Banning %s (%s) by request of %s", kickUser.getNickname(), banIp,
            user.getNickname()));
      } else {
        banIp = request.getParameter(AjaxRequest.NICKNAME);
        logger.info(String.format("Banning %s by request of %s", banIp, user.getNickname()));
      }
      banList.add(banIp);
  
      return new HashMap<ReturnableData, Object>();
    }
  }
  